FDI in the US takes on an entirely diffferent shape than FDI in other countries.
With China for example the largest investors by far are US corporations who are locating factories etc there.
By far the largest investors in the US are bankers and people pursuing retirements. We have the system for it.
In other words in China our companies buy and build factories. In the US the Euros and whoever else by treasuries or CDs or stocks.
The thing with the investments in China is that China rarely sees the profits from them. They see the investment dollars and job gains, but little else, depending on the nature of the set up. In brief, made in China, sold wherever, and profits sent to New York corp HQ.